Other
Scientific paper
May 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011aspc..439..456n&link_type=abstract
The Galactic Center: a Window to the Nuclear Environment of Disk Galaxies. Proceedings of a workshop held at Shanghai, China on
Other
Scientific paper
The K-shell emission line of neutral iron from the Galactic center region was firstly discovered with ASCA. Since then, the origin is one of the key issues for the structure and activity of the Galactic center. Two possible origins have so far been proposed; fluorescence due either to an X-ray or an electron irradiations. Since the cross sections of these two processes depend differently on the atomic number, detections of neutral Kα lines from other elements such as sulfur, argon, calcium, chrome and manganese atoms would provide key information for the origin. We report the Suzaku discovery of Kα lines of neutral sulfur, argon, calcium, chrome, and manganese atoms from the molecular cloud which emits the brightest neutral iron line. New constrains on the origin of the neutral K-shell lines are given with the combination of these neutral Kα lines.
Go Tsuru Takeshi
Koyama Katsuji
Nobukawa Masayoshi
Ryu Syukyo G.
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